Having a compulsion to go and stand outside your back door for five minutes randomly in the middle of doing something else is not 'natural', no, it's a learned behaviour from smoking.
Yes, we should all get fresh air and sunlight. No we don't need to pause the tv show and head outside for no reason at 9pm when it's dark and cold.
Animals don't breathe indoor air all day, with no sunlight, and neither should we.